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Article type: Cover
1985 Volume 11 Issue 1-4 Pages
Cover1-
Published: May 25, 1985
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Article type: Index
1985 Volume 11 Issue 1-4 Pages
Toc1-
Published: May 25, 1985
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Article type: Index
1985 Volume 11 Issue 1-4 Pages
Toc2-
Published: May 25, 1985
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Koji Sato, Kazuo Moriya
Article type: Article
1985 Volume 11 Issue 1-4 Pages
3-14
Published: May 25, 1985
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Light scattering tomography is a newly developed technique to characterize and visualize various crystalline defects in transparent to translucent crystalline materials, such as inclusions of micron size, dislocations, growth zoning, growth sectors and subgrain boundaries (Moriya and Ogawa, 1978, 1980, 1981, 1982, 1983). In this technique, a narrow laser beam is transmitted through a specimen, and the beam seattered by crystalline defects in the specimen are recorded on a photographic film which is scanned over the specimen. Thus the distribution of defects and textures in the specimen can be investigated nondestructively. Since crystalline defects and textures are good indicators of growth eonditions, histories and inethods, this method can be used as a new powerfull method in testing and identifying natural, synthetic and treated stones. In this paper, the results obtained by applying the light scattering tomography to natural, and synthetic ruby cut stones of several origins are reported. Ruby cut stones investigated are naturals from Thailand and Burma, synthetics by Vernueil, fioating zone, flux (several companies) and hydrothermal techniques. Each stone exhibits these charaeteristic features, Characteristic features visualized by the light scattering tomography can be used as diagnostic features.
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H Takamura
Article type: Article
1985 Volume 11 Issue 1-4 Pages
15-28
Published: May 25, 1985
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Pegmatite deposites of Aracuai mine, which is located near River Jequitinhonha, Minas Gerais, Brazil, produce lithium ores and gem minerals. They develop in granitic rocks of the Precambrian age and are composed of quartz, petalite and spodumene associated with some amounts of lepidolite, pollucite, amblygonite, tourmaline and morganite.
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[in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
29-
Published: May 25, 1985
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
30-31
Published: May 25, 1985
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[in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
32-33
Published: May 25, 1985
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Article type: Bibliography
1985 Volume 11 Issue 1-4 Pages
34-46
Published: May 25, 1985
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
47-
Published: May 25, 1985
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[in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
47-48
Published: May 25, 1985
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[in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
48-
Published: May 25, 1985
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[in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
48-49
Published: May 25, 1985
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
49-
Published: May 25, 1985
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[in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
49-50
Published: May 25, 1985
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[in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
50-51
Published: May 25, 1985
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
51-
Published: May 25, 1985
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[in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
51-
Published: May 25, 1985
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[in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
52-
Published: May 25, 1985
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
52-53
Published: May 25, 1985
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[in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
53-
Published: May 25, 1985
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
53-
Published: May 25, 1985
Released on J-STAGE: January 16, 2017
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[in Japanese]
Article type: Article
1985 Volume 11 Issue 1-4 Pages
53-
Published: May 25, 1985
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Article type: Cover
1985 Volume 11 Issue 1-4 Pages
Cover2-
Published: May 25, 1985
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Article type: Cover
1985 Volume 11 Issue 1-4 Pages
Cover3-
Published: May 25, 1985
Released on J-STAGE: January 16, 2017
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